0:00:03.204,0:00:06.838 [David Attenborough]: We are a flexible and innovative species 0:00:06.838,0:00:11.078 and we have the capacity to adapt and modify our behavior 0:00:11.078,0:00:17.726 Now, we most certainly have to do so if we're to deal with climate change. 0:00:17.726,0:00:21.686 It's the biggest challenge we have yet faced. 0:00:21.686,0:00:25.292 [Bill Nye]: The same thing that keeps the Earth warm 0:00:25.292,0:00:26.883 CO2! 0:00:26.883,0:00:30.534 May make the Earth too warm 0:00:30.534,0:00:32.160 It holds in heat 0:00:32.160,0:00:35.197 Methane, Chloroflourocarbons, water vapor and 0:00:35.197,0:00:37.785 Carbon dioxide - they all trap heat 0:00:37.785,0:00:40.375 Methane, Chloroflourocarbons, water vapor and 0:00:40.375,0:00:42.984 Carbon dioxide - they all trap heat 0:00:42.984,0:00:47.511 [Isaac Asimov]: It is important that the world get together 0:00:47.511,0:00:53.628 To face the problems which attack us as a unit 0:00:53.628,0:00:56.402 [Richard Alley]: The evidence is clear 0:00:56.402,0:00:58.970 [Nye]: The globe is getting too warm 0:00:58.970,0:01:01.360 [Alley]: We can avoid climate catastrophies 0:01:01.360,0:01:03.650 We can do this 0:01:03.650,0:01:05.710 [Nye]: We can change the world 0:01:05.710,0:01:08.444 [Alley]: Science offers us answers 0:01:08.444,0:01:09.847 To these huge challenges 0:01:09.847,0:01:12.374 [Nye]: It's one global ecosystem 0:01:12.374,0:01:14.214 [Alley]: We can do this 0:01:14.214,0:01:20.391 [Nye]: We can change the world 0:01:20.391,0:01:25.273 Every single thing every one of us does 0:01:25.273,0:01:28.426 Affects everybody all over the world 0:01:28.426,0:01:31.205 It's one global ecosystem 0:01:31.205,0:01:33.669 Warm, wet, cold or dry 0:01:33.669,0:01:36.489 Climates all start in the sky 0:01:36.489,0:01:38.922 Warm, wet, cold or dry 0:01:38.922,0:01:41.809 Climates all start in the sky 0:01:41.809,0:01:44.516 When the C02 is high, the temperature is high 0:01:44.516,0:01:47.023 Moving together in lock step 0:01:47.023,0:01:49.674 When the C02 is low, the temperature is low 0:01:49.674,0:01:52.439 Moving together 0:01:52.439,0:01:56.801 [Isaac Asimov]: It is important that the world get together 0:01:56.801,0:02:03.029 To face the problems which attack us as a unit 0:02:03.029,0:02:05.552 [Richard Alley]: The evidence is clear 0:02:05.552,0:02:08.283 [Nye]: The globe is getting too warm 0:02:08.283,0:02:10.720 [Alley]: We can avoid climate catastrophies 0:02:10.720,0:02:12.869 We can do this 0:02:12.869,0:02:14.818 [Nye]: We can change the world 0:02:14.818,0:02:17.345 [Alley]: Science offers us answers 0:02:17.345,0:02:19.111 To these huge challenges 0:02:19.111,0:02:22.057 [Nye]: It's one global ecosystem 0:02:22.057,0:02:23.367 [Alley]: We can do this 0:02:23.367,0:02:27.990 [Nye]: We can change the world 0:02:27.990,0:02:31.320 [Richard Alley]: Our use of fossil fuels for energy is pushing us towards a climate 0:02:31.320,0:02:35.037 unlike any seen in the history of civilization 0:02:35.037,0:02:37.782 Adding carbon dioxide to the atmosphere 0:02:37.782,0:02:40.498 Warms things up 0:02:40.498,0:02:42.680 The rise in C02 0:02:42.680,0:02:45.676 Comes from burning fossil fuels 0:02:45.676,0:02:48.095 When you burn them, add oxygen 0:02:48.095,0:02:50.817 That makes C02 that goes in the air 0:02:50.817,0:02:56.283 We're reversing the process by which they formed 0:02:56.283,0:02:58.686 [Asimov]: We're talking about something 0:02:58.686,0:03:01.468 That affects the entire Earth 0:03:01.468,0:03:06.882 Problems that transcend nations. 0:03:06.882,0:03:11.433 It is important that the world get together 0:03:11.433,0:03:17.180 To face the problems which attack us as a unit 0:03:17.180,0:03:20.062 [Richard Alley]: The evidence is clear 0:03:20.062,0:03:22.912 [Nye]: The globe is getting too warm 0:03:22.912,0:03:25.242 [Alley]: We can avoid climate catastrophies 0:03:25.242,0:03:26.971 We can do this 0:03:26.971,0:03:29.687 [Nye]: We can change the world 0:03:29.687,0:03:32.025 [Alley]: Science offers us answers 0:03:32.025,0:03:33.757 To these huge challenges 0:03:33.757,0:03:36.968 [Nye]: It's one global ecosystem 0:03:36.968,0:03:38.327 [Alley]: We can do this 0:03:38.327,9:59:59.000 [Nye]: We can change the world